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Fig. 6 | BMC Evolutionary Biology

Fig. 6

From: Molecular and phenotypic distinction of the very recently evolved insular subspecies Mus musculus helgolandicus ZIMMERMANN, 1953

Fig. 6

PCA analysis of mandible shape between M. m. helgolandicus and reference populations. a General comparison with multiple populations. The first two axes of a PCA scatter plot are shown. b Comparison of each time sample from Heligoland with the reference population from Germany. The first two axes of a PCA scatter plot are shown on top; the shape changes along the first two PCs between M. m. helgolandicus and M. m. domesticus populations are depicted as wire-frame graphs at the bottom. Shape changes are from grey (M. m. domesticus) to red (M. m. helgolandicus). The red arrow points to the individual that represents a recent immigrant (see text) 

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